ecocodes
a1b2c3d4e5f6g7h8
After 3...c6 · White to move

Semi-Slav Defense

The list files 73 lines under the name Semi-Slav Defense, spread over nine codes (D30–D31, D43–D49). D45 alone holds 15 of them. From the starting position of Semi-Slav Defense: Accelerated Move Order, the most-travelled continuation is 4.Nf3, with 7 lines. The deepest, Semi-Slav Defense: Meran Variation, Rellstab Attack, runs to 15.Bg5. At the end of 17 lines one side is ahead on material; nine names contain the word Gambit.

Score sheet
#WhiteBlack
1d4d5
2c4e6
3Nc3c6

Where the lines split

Eighteen of the 73 lines continue from 3...c6; the bars show how many take each next move, and the indented rows the most common reply. The other 54 reach the opening by a different move order.

  1. 4.Nf37
    1. 4...dxc45
    2. 4...Nf62
  2. 4.e36
    1. 4...Nf64
    2. 4...f52
  3. 4.e45
    1. 4...dxe44

Codes holding Semi-Slav Defense lines

Volume D

  1. 00
  2. 01
  3. 02
  4. 03
  5. 04
  6. 05
  7. 06
  8. 07
  9. 08
  10. 09
  11. 10
  12. 11
  13. 12
  14. 13
  15. 14
  16. 15
  17. 16
  18. 17
  19. 18
  20. 19
  21. 20
  22. 21
  23. 22
  24. 23
  25. 24
  26. 25
  27. 26
  28. 27
  29. 28
  30. 29
  31. 30
  32. 31
  33. 32
  34. 33
  35. 34
  36. 35
  37. 36
  38. 37
  39. 38
  40. 39
  41. 40
  42. 41
  43. 42
  44. 43
  45. 44
  46. 45
  47. 46
  48. 47
  49. 48
  50. 49
  51. 50
  52. 51
  53. 52
  54. 53
  55. 54
  56. 55
  57. 56
  58. 57
  59. 58
  60. 59
  61. 60
  62. 61
  63. 62
  64. 63
  65. 64
  66. 65
  67. 66
  68. 67
  69. 68
  70. 69
  71. 70
  72. 71
  73. 72
  74. 73
  75. 74
  76. 75
  77. 76
  78. 77
  79. 78
  80. 79
  81. 80
  82. 81
  83. 82
  84. 83
  85. 84
  86. 85
  87. 86
  88. 87
  89. 88
  90. 89
  91. 90
  92. 91
  93. 92
  94. 93
  95. 94
  96. 95
  97. 96
  98. 97
  99. 98
  100. 99
CodeReference lineLinesLongest line (plies)
D30Queen’s Gambit Declined2Semi-Slav Defense: Quiet Variation (10)
D31Queen’s Gambit Declined: Queen’s Knight Variation13Semi-Slav Defense: Marshall Gambit, Tolush Variation (18)
D43Semi-Slav Defense4Semi-Slav Defense: Hastings Variation (13)
D44Semi-Slav Defense Accepted7Semi-Slav Defense: Botvinnik Variation, Lilienthal Variation (21)
D45Semi-Slav Defense: Main Line15Semi-Slav Defense: Stoltz Variation, Center Variation, Mikhalchishin Line (19)
D46Semi-Slav Defense: Main Line12Semi-Slav Defense: Chigorin Defense (21)
D47Semi-Slav Defense: Semi-Meran Variation6Semi-Slav Defense: Meran Variation, Wade Variation, Kaidanov Gambit (25)
D48Semi-Slav Defense: Meran Variation8Semi-Slav Defense: Meran Variation (20)
D49Semi-Slav Defense: Meran Variation, Blumenfeld Variation6Semi-Slav Defense: Meran Variation, Rellstab Attack (29)

Longest Semi-Slav Defense lines

  1. Semi-Slav Defense: Meran Variation, Rellstab Attack 29
  2. Semi-Slav Defense: Meran Variation, Wade Variation, Kaidanov Gambit 25
  3. Semi-Slav Defense: Meran Variation, Sozin Variation 25
  4. Semi-Slav Defense: Meran Variation, Stahlberg Variation 25
  5. Semi-Slav Defense: Meran Variation, Wade Variation, Larsen Variation 22
  6. Semi-Slav Defense: Meran Variation, Rabinovich Variation 22
  7. Semi-Slav Defense: Meran Variation, Sozin Variation 22
  8. Semi-Slav Defense: Botvinnik Variation, Lilienthal Variation 21